./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 33a8be774dbf0ffa25cd035ec8d49deb9466ec7f .......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:39,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:39,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:39,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:39,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:39,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:39,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:39,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:39,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:39,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:39,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:39,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:39,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:39,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:39,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:39,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:39,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:39,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:39,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:39,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:39,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:39,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:39,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:39,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:39,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:39,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:39,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:39,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:39,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:39,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:39,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:39,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:39,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:39,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:39,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:39,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:39,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:39,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:39,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:39,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:39,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:39,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:40,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:40,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:40,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:40,003 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:40,004 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:40,004 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:40,004 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:40,004 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:40,005 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:40,005 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:40,005 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:40,005 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:40,006 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:40,006 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:40,006 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:40,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:40,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:40,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:40,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:40,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:40,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:40,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:40,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:40,013 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:40,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:40,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:40,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:40,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:40,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:40,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:40,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:40,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:40,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:40,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:40,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:40,018 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:40,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:40,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:40,019 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:40,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:40,020 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33a8be774dbf0ffa25cd035ec8d49deb9466ec7f [2020-11-28 07:40:40,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:40,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:40,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:40,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:40,291 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:40,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c [2020-11-28 07:40:40,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/data/5751531b0/c10a5b4e2ef74e5a95ccb4c104119a27/FLAGdc7357d9e [2020-11-28 07:40:40,834 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:40,835 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c [2020-11-28 07:40:40,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/data/5751531b0/c10a5b4e2ef74e5a95ccb4c104119a27/FLAGdc7357d9e [2020-11-28 07:40:41,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/data/5751531b0/c10a5b4e2ef74e5a95ccb4c104119a27 [2020-11-28 07:40:41,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:41,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:41,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:41,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:41,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:41,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63598b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41, skipping insertion in model container [2020-11-28 07:40:41,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:41,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:41,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:41,452 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:41,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:41,483 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:41,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41 WrapperNode [2020-11-28 07:40:41,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:41,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:41,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:41,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:41,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:41,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:41,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:41,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:41,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... [2020-11-28 07:40:41,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:41,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:41,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:41,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:41,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:41,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:42,104 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:42,104 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-28 07:40:42,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:42 BoogieIcfgContainer [2020-11-28 07:40:42,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:42,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:42,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:42,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:42,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:41" (1/3) ... [2020-11-28 07:40:42,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d3fa87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:42, skipping insertion in model container [2020-11-28 07:40:42,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:41" (2/3) ... [2020-11-28 07:40:42,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d3fa87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:42, skipping insertion in model container [2020-11-28 07:40:42,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:42" (3/3) ... [2020-11-28 07:40:42,117 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound20.c [2020-11-28 07:40:42,128 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:42,132 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:40:42,151 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:40:42,177 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:42,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:42,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:42,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:42,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:42,178 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:42,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:42,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-28 07:40:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:40:42,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:42,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:40:42,197 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:42,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:42,204 INFO L82 PathProgramCache]: Analyzing trace with hash 3212560, now seen corresponding path program 1 times [2020-11-28 07:40:42,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:42,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463359896] [2020-11-28 07:40:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:42,305 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:40:42,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264992438] [2020-11-28 07:40:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:42,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:40:42,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:42,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:42,496 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:42,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463359896] [2020-11-28 07:40:42,517 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:40:42,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264992438] [2020-11-28 07:40:42,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:42,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:40:42,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876389267] [2020-11-28 07:40:42,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:42,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:42,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:42,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:42,546 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 5 states. [2020-11-28 07:40:44,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:44,726 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2020-11-28 07:40:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:44,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-28 07:40:44,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:44,737 INFO L225 Difference]: With dead ends: 42 [2020-11-28 07:40:44,738 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 07:40:44,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:44,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 07:40:44,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2020-11-28 07:40:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 07:40:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-11-28 07:40:44,777 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 4 [2020-11-28 07:40:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:44,778 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-11-28 07:40:44,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-11-28 07:40:44,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:40:44,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:44,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:45,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 07:40:45,009 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:45,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1221954434, now seen corresponding path program 1 times [2020-11-28 07:40:45,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:45,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335972890] [2020-11-28 07:40:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:45,026 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:40:45,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033615668] [2020-11-28 07:40:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:45,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:40:45,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:45,109 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 07:40:45,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:40:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:45,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:45,201 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:45,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335972890] [2020-11-28 07:40:45,268 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:40:45,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033615668] [2020-11-28 07:40:45,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:45,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-11-28 07:40:45,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143097608] [2020-11-28 07:40:45,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:40:45,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:45,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:40:45,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:40:45,272 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2020-11-28 07:40:51,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:51,781 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-28 07:40:51,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:51,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-28 07:40:51,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:51,783 INFO L225 Difference]: With dead ends: 15 [2020-11-28 07:40:51,783 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 07:40:51,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:40:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 07:40:51,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 07:40:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:40:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-28 07:40:51,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2020-11-28 07:40:51,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:51,789 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-28 07:40:51,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:40:51,789 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-28 07:40:51,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:40:51,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:51,790 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-11-28 07:40:51,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:51,991 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:51,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:51,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1407500432, now seen corresponding path program 1 times [2020-11-28 07:40:51,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:51,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476645371] [2020-11-28 07:40:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:52,006 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:40:52,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926579843] [2020-11-28 07:40:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:52,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-28 07:40:52,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:52,378 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2020-11-28 07:40:52,402 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-28 07:40:52,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:40:52,593 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-11-28 07:40:52,610 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 2, 4, 1] term [2020-11-28 07:40:52,611 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:40:52,623 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-28 07:40:52,624 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:40:52,630 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:40:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:52,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:52,698 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:52,752 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 4, 1] term [2020-11-28 07:40:52,753 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:52,920 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-28 07:40:52,921 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:40:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:40:52,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476645371] [2020-11-28 07:40:52,923 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:40:52,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926579843] [2020-11-28 07:40:52,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [866301246] [2020-11-28 07:40:52,945 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-28 07:40:52,945 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:40:52,950 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:40:52,956 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:40:52,957 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:40:53,023 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:40:53,541 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:40:53,855 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-11-28 07:40:54,042 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-28 07:40:54,515 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-28 07:40:54,954 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-11-28 07:40:54,956 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:40:54,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:40:54,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-11-28 07:40:54,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792812433] [2020-11-28 07:40:54,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:40:54,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:54,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:40:54,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:40:54,958 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2020-11-28 07:40:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:57,317 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-28 07:40:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:57,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-11-28 07:40:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:57,350 INFO L225 Difference]: With dead ends: 15 [2020-11-28 07:40:57,350 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:57,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:40:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:57,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:57,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 07:40:57,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:57,352 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:57,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:40:57,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:57,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:57,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:57,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:40:57,733 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 12 [2020-11-28 07:40:58,038 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2020-11-28 07:40:58,041 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 48) no Hoare annotation was computed. [2020-11-28 07:40:58,041 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-28 07:40:58,042 INFO L270 CegarLoopResult]: At program point L40-2(lines 35 48) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x1~0 (+ ULTIMATE.start_main_~y2~0 ULTIMATE.start_main_~y3~0 (* ULTIMATE.start_main_~y1~0 ULTIMATE.start_main_~x2~0))))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (not (= ULTIMATE.start_main_~x2~0 0)) (= ULTIMATE.start_main_~x1~0 ULTIMATE.start_main_~y3~0) (= ULTIMATE.start_main_~y2~0 0) .cse0))) [2020-11-28 07:40:58,042 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:40:58,042 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-11-28 07:40:58,042 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-11-28 07:40:58,042 INFO L270 CegarLoopResult]: At program point L16-1(line 38) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x1~0 (+ ULTIMATE.start_main_~y2~0 ULTIMATE.start_main_~y3~0 (* ULTIMATE.start_main_~y1~0 ULTIMATE.start_main_~x2~0)))) [2020-11-28 07:40:58,042 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-11-28 07:40:58,042 INFO L277 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-11-28 07:40:58,042 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:40:58,043 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-28 07:40:58,043 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-11-28 07:40:58,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:58 BoogieIcfgContainer [2020-11-28 07:40:58,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:58,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:58,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:58,069 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:58,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:42" (3/4) ... [2020-11-28 07:40:58,072 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:58,083 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 07:40:58,083 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:40:58,083 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:40:58,083 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:58,147 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_69483e11-ead1-45db-a621-6e3e1fef74bd/bin/utaipan/witness.graphml [2020-11-28 07:40:58,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:58,149 INFO L168 Benchmark]: Toolchain (without parser) took 16937.54 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 60.1 MB in the beginning and 68.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:58,150 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 67.1 MB. Free memory was 29.3 MB in the beginning and 29.3 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:58,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.75 ms. Allocated memory is still 92.3 MB. Free memory was 59.9 MB in the beginning and 69.3 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:58,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.28 ms. Allocated memory is still 92.3 MB. Free memory was 69.3 MB in the beginning and 68.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:58,154 INFO L168 Benchmark]: Boogie Preprocessor took 20.74 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 66.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:58,154 INFO L168 Benchmark]: RCFGBuilder took 565.93 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 47.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:58,155 INFO L168 Benchmark]: TraceAbstraction took 15961.12 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 46.6 MB in the beginning and 70.9 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:58,155 INFO L168 Benchmark]: Witness Printer took 78.59 ms. Allocated memory is still 111.1 MB. Free memory was 70.9 MB in the beginning and 68.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:58,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 67.1 MB. Free memory was 29.3 MB in the beginning and 29.3 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.75 ms. Allocated memory is still 92.3 MB. Free memory was 59.9 MB in the beginning and 69.3 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.28 ms. Allocated memory is still 92.3 MB. Free memory was 69.3 MB in the beginning and 68.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.74 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 66.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 565.93 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 47.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15961.12 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 46.6 MB in the beginning and 70.9 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 78.59 ms. Allocated memory is still 111.1 MB. Free memory was 70.9 MB in the beginning and 68.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 == cond && x1 == y2 + y3 + y1 * x2 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (1 <= cond && x1 == y2 + y3 + y1 * x2) || (((!(x2 == 0) && x1 == y3) && y2 == 0) && x1 == y2 + y3 + y1 * x2) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 36 SDslu, 25 SDs, 0 SdLazy, 78 SolverSat, 26 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 108 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2634 SizeOfPredicates, 34 NumberOfNonLiveVariables, 183 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 6/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...